Arisaka Defense Low Profile Picatinny Rail KeyMod 5 Slot Black. It offers a reduced height to pull any Picatinny accessories closer to the handguard. The 5 slot model connects with three of BCM's patented reverse threaded KeyMod screws which will spread the increased stress of large Picatinny accessories like bipods or vertical grips over more KeyMod slots. The 3 slot version is useful when less rail space is required. The Low Profile Picatinny Rail is CNC machined from 6061-T6 aluminum and MIL-A-8625 Type III hard coat anodized. Requires a T15 Torx wrench for installation (not included). BCM KeyMod screws are covered under US Patent 9377274. Made in specialized factories. Specifications for Arisaka Defense Low Profile KeyMod Picatinny Rails: Manufacturer: Arisaka Defense Color: Black Finish: MIL-A-8625 Type III Hard Coat Anodized Fabric/Material: CNC machined from 6061-T6 aluminum Gun Rail: Picatinny Length: 2.15 in Height: 0.277 in Weight: 0.6 oz Additional Features: 5 Picatinny slots Country of Origin: USA Package Contents: Arisaka Defense Low Profile Picatinny Rail KeyMod Arisaka Defense LPR-K: Low Profile Picatinny Rail KeyMod 5 Slot Black